Visibility evaluation experiments of optical wireless pedestrian-support system using self-illuminating bollard. - Saeko Oshiba; Shunsuke Iki; Jun Yabuchi; Yoshikazu Mizutani; Kumiko Kawabata; Kanako Nakagawa; Yoji Kitani; Saori Kitaguchi; Kazunari Morimoto (ICIS, 2016)